Plow-point bolt.



G. W. TURNER.

PLOW POINT BOLT.

APPLICATION FILED PEB.4, 1913.

1 88,046. Patented'Feb. 24, 1914.

INVEN T0 Br 7 414124 505M 4 Arron/15y GEORGE W. TURNER, O]? BISHOP, CALIFORNIA;

BLOW-POINT BOLT.

Specification of Letters Patent.

Patented Feb. 24, 1914.

Application filed February 4, 1913. Serial No. 746,171.

To all whom it may concern:

Be it known that I, GEORGE W. TURNER, a citizen of the United States, residing at Bishop. in the county of Inyo and State of California, have invented certain new and useful Improvements in Plow-Point Bolts, of which the following is.a specification.

This invention has relation to bolts especially adapted to be used for securing plow points in place upon plow standards or frogs, although it may be used to advantage for securing other ob ects together.

An object of the invention is to so construct the bolt that when it is in position in a plow point the outer surface of its head is flush with the forward surface of the point and thehead which is conical is snugly received in the conical opening provided in the point.

A further object of the invention is to provide in conjunction with a bolt having a head as specified a series of recesses in the head towhich a wrench may be readily applied. The said recesses being so disposed as not to weaken the head and the opening in the point being adapted to prevent the head from splitting or fracturing during the operation of tightening or loosening the bolt. In view of the objects sought to be attained as hereinbefore set forth the disposition of the recesses in the head with relation to the configuration of the head and the opening in the point or object secured by the bolt is a matter of vital importance in so far as the idea of the invention is concerned.

With these and other ob ects in view, the inventlon consists in certain novel features of construction as hereinafter shown and described, and then particularly pointed out in the claim and in the drawings illustrative of the preferred embodiment of the invention.

Figure 1 is a sectional view of a plow point with the bolt applied. Fig. 2 is an enlarged similar view. Fig. 3 is an end view of the bolt. Fig. 4 is a perspective view of the same. Fig. 5 is a, perspective view of the head and handle adapted to be used with the bolt.

Corresponding and like parts are referred to in the following descriptionand indicated in all the views of the accompanying drawings by the same reference characters.

Asillustrated in the accompanying drawing the bolt is shown securing a point 1 to a standard or frog 2. The'said point and standard are of any desired pattern or form. The point 1 is provided with a conical bolt opening 3. The bolt 4 passes through the opening 3 and a registering opening provided in the standard or frog 2. A nut 5 is fixed to the rear side of the standard orfrog 2 and is screw threaded upon the rear end of the boltt in the usual manner.

The bolt at is provided with a conical head 7 which is adapted to fit snugly in the bolt opening 3. When the head 7 is snugly received 1n the opening 3 the outer surface of the head is flush with the forward surface of the point 1 and consequently the conical wall of the opening 3 is in close contact with the conical side of the head 7 and serves to prevent the head from splitting or cracking or end with arcuate recesses 8. These 're-' cesses are arranged in pairs and the members of the pairs are located at the opposite sides of the center of the head 7. The side walls 9 of the recesses 8 are parallel with the 'axis of the bolt 4 and are surrounded by the conical exterior of the head 7. The bottoms 10 of the recesses 8 incline downwardlyor inwardly from the outer surface of the head 7 to the ends of the recesses 8. Two sets of recesses 8 each including two members are provided. The members of one pair of recesses 8 have their shallow ends adjacent the shallow ends of the members of the other set of recesses. Consequently the deep ends of the recesses 8 which are adjacent each other are spaced from each other while the shallow ends of the said recesses approximately meet each other.

In combination with a bolt as described a wrench head indicated at 11 is used. This head is provided at its ends with teeth 12 which are adapted to be inserted in the recesses 8. The teeth 12 at one end of the head 11 are disposed in the opposite direction from the tech 12 at the other end of the said head. One set of teeth 12 is insertec in one pair of recesses 8 for tightening the bolt tand the other set of teeth 12 is i" serted in the other set of recesses 8 for loosening the bolt 4. The head 11 may be any desired pattern or configuration ant the handle lever 13 may be applied thereto for the purpose of turning the same.

From the above description it will be see that during the turning operation of the bolt 4 the head is at all times snugly received in the opening-3 of the point land as strain is applied to the bolt through the wrench head 11, the wall of the opening 3 braces the head 7 of the bolt and prevents the said head 7 from splitting or fracturing. This same advantage is gained when the bolt 4 is being loosened. Furthermore the rece'sses 8 are entirely within the conical wall of the head 7 and consequently there are no A bolt provided at the end of its head with arcuate recesses, said recesses being concentrically positioned with relation to the axis of the bolt and being in arcuate 'alinement longitudinally and having parallel side walls, said recesses being arranged in two sets, each set including two members, the members of each set being located diametrically at opposite sides "of the axis of the bolt, the recesses being deeper at one end than at the other, the deep ends of the recesses of the difi'er'ent sets being adjacent each other and the shallow ends of the reeesses of the different sets substantially merging into each other, and the deep ends of the members-of the same set of recesses being diametrically opposite each other with relation to the center of the bolt.

In testimony whereof I ailix my signature in presence of two witnesses.

GEORGE W. TURNER. Witnesses:

WM. B. HIMROD, J AS. WA'rraRsoN. 

